<template>
  <div>
  <div class="checkout-address">
    <div class="text">
      <div v-if="!showAddress" class="none">您需要先添加收货地址才可提交订单。</div>
      <ul v-if="showAddress">
        <li><span>收<i/>货<i/>人：</span>{{showAddress.receiver}}</li>
        <li><span>联系方式：</span>{{showAddress.contact.replace(/^(\d{3})\d{4}(\d{4})$/,'$1****$2')}}</li>
        <li><span>收货地址：</span>{{showAddress.fullLocation.replace(/ /g,'')}}{{showAddress.address}}</li>
      </ul>
      <a @click="openAddressEdit(showAddress)" v-if="showAddress" href="javascript:;">修改地址</a>
    </div>
    <div class="action">
      <XtxButton @click="openDialog()" class="btn">切换地址</XtxButton>
      <XtxButton @click="openAddressEdit({})" class="btn">添加地址</XtxButton>
    </div>
  </div>
  <!-- 对话框组件-切换收货地址 -->
    <XtxDialog title="切换收货地址" :visible="visibleDialog" @closeVisible="closeVisible">
    <div @click="selectedAddress=item" :class="{active:selectedAddress&&selectedAddress.id===item.id}" class="text item" v-for="item in list" :key="item.id">
      <ul>
        <li><span>收<i/>货<i/>人：</span>{{item.receiver}}</li>
        <li><span>联系方式：</span>{{item.contact.replace(/^(\d{3})\d{4}(\d{4})$/,'$1****$2')}}</li>
        <li><span>收货地址：</span>{{item.fullLocation.replace(/ /g,'')+item.address}}</li>
      </ul>
    </div>
    <template #footer>
      <XtxButton @click="visibleDialog=false" type="gray" style="margin-right:20px">取消</XtxButton>
      <XtxButton @click="confirmAddressFn" type="primary">确认</XtxButton>
    </template>
  </XtxDialog>
  <!-- 收货地址添加编辑组件 -->
  <AddressEdit @on-success="successHandler" ref="addressEditCom" />
  </div>
</template>
<script>
  import { ref } from 'vue'
  import AddressEdit from './address-edit'
  export default {
    name: 'CheckoutAddress',
    components: { AddressEdit },
    props: {
      // 收货地址列表
      list: {
        type: Array,
        default: () => []
      }
    },
    // 1. 在拥有根元素的组件中，触发自定义事件，有没有emits选项无所谓
    // 2. 如果你的组件渲染的代码片段，vue3.0规范，需要在emits中申明你所触发的自定义事件
    // 3. 提倡：你发了自定义事件，需要在emits选项申明下，代码可读性很高
    emits: ['change'],
    setup (props, { emit }) {
      // 1. 找到默认收货地址
      // 2. 没有默认收货地址，使用第一条收货地址
      // 3. 如果没有数据，提示添加
      const showAddress = ref(null)
      const defaultAddress = props.list.find(item => item.isDefault === 0)
      if (defaultAddress) {
        showAddress.value = defaultAddress
      } else {
        if (props.list.length) {
         // 默认选中第一条收货地址
          showAddress.value = props.list[0]
        }
      }

      // 默认通知父组件一个收货地址ID
      emit('change', showAddress.value && showAddress.value.id)
      // 切换地址对话框显示隐藏
      const visibleDialog = ref(false)
      // 记录当前你选中的地址ID
      const selectedAddress = ref(null)
      const confirmAddressFn = () => {
        // 显示的地址换成呢选中的地址
        showAddress.value=selectedAddress.value
        // 把选中的地址ID通知结算组件
        emit('change', selectedAddress.value?.id)
        visibleDialog.value = false
      }
      // 点击关闭对话框
      const closeVisible=(val)=>{
        visibleDialog.value = val
      }
      const openDialog = () => {
        // 将之前的选中地址改成null
        selectedAddress.value = null
        visibleDialog.value = true
      }

      // 打开添加编辑收货地址对话框
      const addressEditCom = ref(null)
      const openAddressEdit = (address) => {
        // 添加 {}  修改 {数据}
       addressEditCom.value.open(address)
      }
      const successHandler = (formData) => {
        // 根据formData中的ID去当前地址列表中查找，有就是修改，否则是添加
         const address=props.list.find(item=>item.id===formData.id)
        if (address) {
          for (const key in address) {
            address[key]=formData[key]
          }
        } else {
          // 如果是添加：往list中追加一条
          // 当你在修改formData的时候，数组中的数据也会更新，因为是同一引用地址。
          // 啥时候修改formData，当你打开对话框需要清空之前的输入信息
          // 克隆formData数据
          const jsonStr = JSON.stringify(formData)
          // eslint-disable-next-line vue/no-mutating-props
          props.list.unshift(JSON.parse(jsonStr))
        }

      }

      return {
        showAddress,
        visibleDialog,
        selectedAddress,
        confirmAddressFn,
        openDialog,
        openAddressEdit,
        addressEditCom,
        successHandler,
        closeVisible,

      }
    }
  }
</script>
<style scoped lang="less">
  .xtx-dialog {
    .text {
      flex: 1;
      min-height: 90px;
      display: flex;
      align-items: center;
      &.item {
        border: 1px solid #f5f5f5;
        margin-bottom: 10px;
        cursor: pointer;
        &.active,&:hover {
          border-color: @xtxColor;
          background: lighten(@xtxColor,50%);
        }
        > ul {
          padding: 10px;
          font-size: 14px;
          line-height: 30px;
        }
      }
    }
  }
  .checkout-address {
    border: 1px solid #f5f5f5;
    display: flex;
    align-items: center;
    .text {
      flex: 1;
      min-height: 90px;
      display: flex;
      align-items: center;
      .none {
        line-height: 90px;
        color: #999;
        text-align: center;
        width: 100%;
      }
      > ul {
        flex: 1;
        padding: 20px;
        li {
          line-height: 30px;
          span {
            color: #999;
            margin-right: 5px;
            > i {
              width: 0.5em;
              display: inline-block;
            }
          }
        }
      }
      > a {
        color: @xtxColor;
        width: 160px;
        text-align: center;
        height: 90px;
        line-height: 90px;
        border-right: 1px solid #f5f5f5;
      }
    }
    .action {
      width: 420px;
      text-align: center;
      .btn {
        width: 140px;
        height: 46px;
        line-height: 44px;
        font-size: 14px;
        &:first-child {
          margin-right: 10px;
        }
      }
    }
  }
</style>
